Hydro-Unit Utility Line

Summary

Product identification

The product series is Hydro-Unit DPV(F) Utility Line.

Key abbreviations used in the documentation include:

• HU: Hydro-Unit
• MC: Megacontrol (each pump runs via direct on line)
• MCMF: Megacontrol Multi-Frequency inverter (FRK, FRP)
• DOL: Direct On Line via a relais
• SFT: Direct On Line via a softstarter
• S/D: Direct On Line via star/delta start up
• FRK: Multi-frequency (each pump an inverter) mounted in the cabinet
• FRP: Multi-frequency (each pump an inverter) mounted on the motor
• CI: Cast Iron
• AISI: Stainless Steel
• PN: Pressure nominal
• NW: Flanged connection
• G: Gas thread
• NAP: Normal Amsterdam Peil
• rpm: rounds per minute
• NA: not applicable

The Hydro-Unit models are available in various configurations, including:

• HU 2, 3, and 4 pumps (with control panel)
• HU 2, 3, 4, 5, and 6 pumps (with separate control panel)
• Control panel types: DOL, FRK, FRP, S/D, SFT, with amperage ranges from 0.9 A to 90 A.
• Pump ranges not mentioned are available on request.

Operating limits

The working range of the installation is summarized as follows:

• Ambient temperature: 0 - 30 °C
• Liquid temperature: +4 - 70 °C (Contact your supplier for more detailed advice.)
• Maximum working pressure: See PN class booster set
• Supply pressure: Non-cavitating. Minimum: 50 kPa. Maximum: supply pressure plus pump pressure together may not exceed 1600 kPa. (Select the correct run dry protection when incoming pressure is lower.)
• Maximum height: 1000 m above NAP

Feed water

The HU Utility Line is designed for applications such as:

• (Drinking) water supply systems
• Pressure increase in apartment buildings
• Water treatment systems
• Cooling systems

Electrical

The Hydro-Unit series is available with various motor and control configurations.

Control Types:

• MC DOL: Direct On Line
• MC SFT: Soft starter
• MC S/D: Star-delta
• MCMF: Frequency converter for each pump

Motor Data (3 phase, 2p):

• Rated power output: Ranging from 0.37 kW to 45 kW.
• Rated Voltage: 230/400 V or 400/690 V.
• Tolerance rated voltage: 10% for 50 Hz motors, and -10,+20% or -10,+25% for 60 Hz motors (some 50 Hz motors also have -5,+20%).
• Rated speed: Approximately 2850-2970 rpm for 50 Hz motors and 3420-3563 rpm for 60 Hz motors.
• Motor efficiency class: IE2 or IE3.
• Sound pressure: Ranging from 56 dB(A) to 80 dB(A) for 50 Hz motors, and 58 dB(A) to 80 dB(A) for 60 Hz motors.
• Max. starts per hour: Ranging from 12 to 50.

General Electrical Specifications (for HU2, HU3, HU4 DOL models):

• Connection voltage: 3 x 400 V 50 Hz
• Protection class: IP55

Mechanical / hydraulic

Basic Materials (Hydraulic part):

• Pump casting parts: 1.4308
• Pump sealing: EPDM
• Non-return valve (thread version): POM, 1.4404, Rubber
• Shut-off valve (thread version): 1.4301, 1.4301
• Non-return valve (flanged version) DN65: Bronze, JL 1040, EPDM
• Non-return valve (flanged version) >DN65: JL 1040, JL 1040, EPDM
• Shut-off valve (flanged version): 1.4408, JS 1030, EPDM
• Piping: 1.4301
• Diaphragm vessel: Stainless steel connection / epoxy coating, Butyl rubber
• Pressure transmitter: 1.4305
• Drain: Brass
• Misc.: May contain brass parts

Hydraulic Performance: Hydraulic performance curves are provided for various DPV and DPVF pump types (DPV2, DPV4, DPV6, DPV10, DPV15, DPVF25, DPVF40, DPVF60, DPVF85) at both 50 Hz (~2850 rpm) and 60 Hz (~3450 rpm) for single pump operation. These curves illustrate Förderhöhe (TDH), NPSHR, Eta (efficiency), and Leistungsbedarf (Power Input) against flow rate. See the official PDF for exact tabulated values and performance curves.

General Mechanical Specifications (for HU2, HU3, HU4 DOL models):

• Run-dry protection: Pressure transmitter
• Membrane vessel: 8 l

Dimensions: Detailed dimensions (H1, H2, H3, H4, H5, H6, B1, B2, B3, B4, B5, L1, L2, L3 in mm) and mass (kg) are provided for specific Hydro-Unit configurations (HU2, HU3, HU4) with DPV and DPVF pump types, across different control types (MC DOL, MC SFT, MC S/D) and panel sizes. See the official PDF for exact tabulated values and detailed dimension drawings.

Approvals

• VEWIN water worksheets
• CE (Complies with the European Safety Directive)

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror